Search Results
Showing results 61 to 80 of 303
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-274.jpg?itok=TA-AIu-f)
Micro Automata
Source Institutions
In this activity, learners build small animated toys that move.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-512.png?itok=JyHczqED)
Engineer an Octopus Suction Pad
Source Institutions
In this engineering design challenge, learners build an octopus-inspired suction pad that can grab an object and hold it tightly in the air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-260.jpg?itok=QMGg2-GJ)
Lever Cowboy
Source Institutions
In this activity, learners build a figure that moves and "comes to life" when they pull its string.
Finding the Right Crater
Source Institutions
This quick demonstration (on page 11 of PDF) allows learners to understand why scientists think water ice could remain frozen in always-dark craters at the poles of the Moon.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-510.png?itok=ZqZBZKrE)
Engineer an Aeolipile
Source Institutions
In this engineering design challenge, learners build an air-powered spinning machine.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-276.jpg?itok=ZV861GKw)
Hot Air Balloon
Source Institutions
In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-262.jpg?itok=vySnkQCs)
Hand Spin Helicopter
Source Institutions
In this activity, learners build helicopters and launchers using wooden dowels and scrap paper. Use this activity to explore rotational motion and kinetic and potential energy.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-517.jpg?itok=E3tuDcZV)
Exploring Size: Tiny Ruler
Source Institutions
In this activity, learners investigate just how small a billionth of a meter is by attempting to cut a paper ruler down to a nanometer-sized sliver.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-796.jpg?itok=WbS42mma)
Exploring the Universe: Space Guess Quest
Source Institutions
Space Guess Quest is a fun game that encourages participants to identify the many types of objects in space, from human-made spacecraft to nebulas, galaxies, stars, and worlds.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-503.jpg?itok=pBMveUuL)
Exploring Materials: Hydrogel
Source Institutions
In this activity, learners discover how a super-absorbing material can be used to move a straw.
Soaring Towers: Building with Recycled Materials
Source Institutions
In this activity, learners will build the highest tower they can out of recycled materials.
Egg Osmosis
Source Institutions
Visitors observe three beakers. One beaker contains an egg immersed in vinegar. Visitors observe carbon dioxide gas escaping from the shell as the calcium carbonate reacts with the vinegar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-994.jpg?itok=nUil-1Fj)
The Poor Cartographer: Graph Coloring
Source Institutions
In this activity, learners help a poor cartographer color in the countries on a map, making sure each country is colored a different color than any of its neighbors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-660.jpg?itok=8N2ZSmbE)
Forms of Carbon
Source Institutions
In this activity, educators can demonstrate how the nanoscale arrangement of atoms dramatically impacts a material’s macroscale behavior.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-117.jpg?itok=Yq5LvluE)
Mini Zoetrope
Source Institutions
In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-995.png?itok=E9nL6ARP)
Programming Languages: Harold the Robot
Source Institutions
In this activity related to computer programming, learners give directions to a "robot" (either an adult or another learner) and find out which instructions the robot is able to follow, and how their
Yeast Balloons
Source Institutions
Visitors observe a bottle with a balloon attached around the mouth. The bottle contains a solution of yeast, sugar, and water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-228.gif?itok=P3pOZHU6)
3-2-1 POP!
Source Institutions
In this physics activity, learners build their own rockets out of film canisters and construction paper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-661.jpg?itok=4bXcMGPE)
DNA Nanotechnology
Source Institutions
In this activity, learners explore deoxyribonucleic acid (DNA), a nanoscale structure that occurs in nature.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-472.png?itok=LeKZ-TAQ)
One In The Hand
Source Institutions
In this physics demonstration, learners are challenged to break a raw egg just by squeezing it. Learners will be shocked by their inability to complete the deceivingly simple challenge.